The Progressive Change Campaign Committee, a liberal third-party group, launched its second gun control advertisement aimed at Senate Minority Leader Mitch McConnell of Kentucky on Monday.

The spot opens with Gary Nutt of Cub Run, Ky., holding a rifle and walking down a road.

"I am a Vietnam vet and a hunter," he says. "I only shot my rifle one time this last season. One shot, one deer. But I'd be a pretty bad hunter if I needed an assault rifle to shoot that buck."

Nutt goes on to say that he supports an assault weapons ban. "The NRA and the gun manufacturers have given a ton of money to Sen. Mitch McConnell," Nutt says. "And now he's blocking reform. Senator, whose side are you on?"

A Progressive Change Campaign Committee spokesman said the new spot was backed by at least $25,000 over a week on broadcast and cable television, including the Lexington, Louisville and Bowling Green markets.

It will also air on D.C.-area cable television. The size of the buy could increase with online fundraising.

McConnell's campaign manager, Jesse Benton, said in a statement that the Senator is "committed to protecting the Constitutional Rights of every single Kentuckian"

"Far-left George Soros funded groups are dead-set on eroding our rights and have put a big target on his back, but they will not weaken Leader McConnell's commitment to principle," Benton added.